Griffin PowerJolt Reserve Auto Adapter - 9785-PJLTRSV
For Portable Audio/Video Player, Smartphone - 5 V DC

Extend your surfing, talking, and tune time with PowerJolt Reserve Auto Adapter. At the same time you?re charging your player?s internal battery, you?re also charging the detachable Reserve battery pack for your iPod or iPhone. It?s like getting twice as much use out of every time you charge. It works with iPhone, iPod, and almost any other device that charges by a standard USB connection. When you arrive at your destination, unclip the Reserve battery pack and take it with you (it?s small enough to fit in your jeans pocket). The Reserve battery snaps into your Dock Connector, adding extra time on your iPod or iPhone. No more worrying about battery life; no need to lug your charger along with you.